| Waterloo to Rockville (Maryland) | 3,863.93 mi (6,218.39 km) |
| Waterloo to Rockville Centre (New York) | 3,650.84 mi (5,875.47 km) |
| Waterloo to Rockwall (Texas) | 4,925.41 mi (7,926.68 km) |
| Waterloo to Rocky Mount (North Carolina) | 4,033.71 mi (6,491.63 km) |
| Waterloo to Rocky Point (New York) | 3,610.49 mi (5,810.52 km) |
| Waterloo to Rocky River (Ohio) | 3,942.61 mi (6,345.02 km) |
| Waterloo to Roessleville (New York) | 3,569.99 mi (5,745.34 km) |
| Waterloo to Rogers (Arkansas) | 4,663.77 mi (7,505.61 km) |
| Waterloo to Rogers (Minnesota) | 4,203.47 mi (6,764.83 km) |
| Waterloo to Rohnert Park (California) | 5,498.52 mi (8,849.01 km) |
| Waterloo to Rolla (Missouri) | 4,491.48 mi (7,228.35 km) |
| Waterloo to Rolling Meadows (Illinois) | 4,150.52 mi (6,679.62 km) |
| Waterloo to Roma (Texas) | 5,368.47 mi (8,639.71 km) |
| Waterloo to Rome (Georgia) | 4,415.96 mi (7,106.79 km) |
| Waterloo to Rome (New York) | 3,615.10 mi (5,817.94 km) |
